'use strict'

var _interopRequireDefault = require('@babel/runtime/helpers/interopRequireDefault')

var _typeof = require('@babel/runtime/helpers/typeof')

Object.defineProperty(exports, '__esModule', {
  value: true
})
exports.default = scrollTo

var _raf = _interopRequireDefault(require('./raf'))

var _getScroll = _interopRequireWildcard(require('./getScroll'))

var _easings = require('./easings')

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== 'function') return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop })(nodeInterop) }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj } if (obj === null || _typeof(obj) !== 'object' && typeof obj !== 'function') { return { default: obj } } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj) } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== 'default' && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc) } else { newObj[key] = obj[key] } } } newObj.default = obj; if (cache) { cache.set(obj, newObj) } return newObj }

function scrollTo(y) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}
  var _options$getContainer = options.getContainer
  var getContainer = _options$getContainer === void 0 ? function() {
    return window
  } : _options$getContainer
  var callback = options.callback
  var _options$duration = options.duration
  var duration = _options$duration === void 0 ? 450 : _options$duration
  var container = getContainer()
  var scrollTop = (0, _getScroll.default)(container, true)
  var startTime = Date.now()

  var frameFunc = function frameFunc() {
    var timestamp = Date.now()
    var time = timestamp - startTime
    var nextScrollTop = (0, _easings.easeInOutCubic)(time > duration ? duration : time, scrollTop, y, duration)

    if ((0, _getScroll.isWindow)(container)) {
      container.scrollTo(window.pageXOffset, nextScrollTop)
    } else if (container instanceof HTMLDocument || container.constructor.name === 'HTMLDocument') {
      container.documentElement.scrollTop = nextScrollTop
    } else {
      container.scrollTop = nextScrollTop
    }

    if (time < duration) {
      (0, _raf.default)(frameFunc)
    } else if (typeof callback === 'function') {
      callback()
    }
  };

  (0, _raf.default)(frameFunc)
}
